<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.1/css/all.min.css">
<!------ Include the above in your HEAD tag ---------->
<div class="full-screen-size-fixed-container d-flex justify-content-center align-items-center">
<div class="p-3 text-center shadow">
<h1 class="display-1 font-weight-bold ">404</h1>
<h4 class="text-muted">Page Not Found</h4>
<p class="">The page got swallowed by a black hole...</p>
<a class="btn btn-dark" href="#" role="button"><i class="fas fa-house-user mr-2"></i> Back to Dashboard</a>
</div>
</div>
